Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
72083087Factored
FactorDigitsBitsDate
121602129574175954224799562388753414337119.92015-04-14 00:50:37
P-1 factors
DateFactorB1B2
2015-04-14121602129574175954224799562388753414366500013965000
History
DateUserTypeResult
2022-05-21LordJuliusNF
no factor from 2^67 to 2^68
2015-04-14KishF-PM1
Factor: 1216021295741759542247995623887534143 / (P-1, B1=665000, B2=13965000, E=12)
2014-08-08NickOfTimeNF
no factor from 2^73 to 2^74
2014-08-08NickOfTimeNF
no factor from 2^72 to 2^73
2014-08-08NickOfTimeNF
no factor from 2^71 to 2^72
2013-04-22s5s5a2012NF
no factor from 2^70 to 2^71
2012-09-28-Anonymous-NF
no factor from 2^69 to 2^70
2010-07-15symalladNF
no factor from 2^68 to 2^69
2010-07-09SchrikNF
no factor from 2^66 to 2^67
2010-07-07SchrikNF
no factor from 2^65 to 2^66
2010-07-06SchrikNF
no factor from 2^64 to 2^65
2008-09-19Wojciech FlorekNF
no factor to 2^64